Alert archive / Illinois / Flash Flood Warnings in 2015

Flash Flood Warning 65, NWS St. Louis, MO

July 19, 2015Greene County, Jersey County, Illinois

NWS St. Louis, MO issued this flash flood warning at Jul 19, 2015, 1:41 PM CDT for Greene County, Jersey County, Illinois. It was in force for 5 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jul 19, 2015, 1:41 PM CDT (18:41 UTC)
Expired
Jul 19, 2015, 6:30 PM CDT
In force
5 hr
Issued by
NWS St. Louis, MO
Area
Storm-based polygon
Flood severity
None

Counties Greene County, IL, Jersey County, IL

The radar

The St Louis radar (KLSX), 77 km from the middle of the area, began a volume at 18:44 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Davenport, (KDVN), launched 12:00Z, 6.7 hours before the alert went out and 252 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Davenport, at 12:00Z on 2015-07-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 431 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Davenport, at 12:00Z on 2015-07-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 2 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
431 J/kg
Mixed-layer CIN
-86 J/kg
Mixed-layer LCL
1078 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
2 m²/s²
0-3 km storm-relative helicity
58 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

263 
WGUS53 KLSX 191841
FFWLSX
ILC061-083-192330-
/O.NEW.KLSX.FF.W.0065.150719T1841Z-150719T2330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
141 PM CDT SUN JUL 19 2015

THE NATIONAL WEATHER SERVICE IN ST LOUIS  HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  GREENE COUNTY IN SOUTHWESTERN ILLINOIS...
  NORTHERN JERSEY COUNTY IN SOUTHWESTERN ILLINOIS...

* UNTIL 630 PM CDT

* AT 133 PM CDT...LAW ENFORCEMENT REPORTED THAT FLOODING PROBLEMS 
  CONTINUED IN SEVERAL LOCATIONS IN GREENE COUNTY...INCLUDING THE 
  HILLVIEW AREA WHERE EVACUATIONS OCCURRED EARLY THIS MORNING DUE TO 
  A LEVEE FAILURE ON HURRICANE CREEK.  IN ADDITION...AN AUTOMATED 
  RIVER GAGE INDICATES FLOODING IS OCCURRING ALONG MACOUPIN CREEK 
  SOUTH OF CARROLLTON...AND FLOODING CAN ALSO BE EXPECTED ALONG 
  APPLE CREEK.  THE HIGH WATER LEVELS ON THESE CREEKS ARE DUE TO 
  RUNOFF PRODUCED BY THE 5 TO 7 INCHES OF RAIN THAT FELL OVER 
  NORTHEAST GREENE COUNTY DURING THE EARLY MORNING HOURS.  THIS 
  RUNOFF MAY ALSO PRODUCE FLOODING ALONG HODGES CREEK IN EXTREME 
  NORTHERN JERSEY COUNTY...JUST NORTH AND EAST OF KEMPER.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE... WHITE 
  HALL...CARROLLTON...ROODHOUSE...GREENFIELD...ATHENSVILLE... OLD 
  KANE...PATTERSON...KANE...KAMPSVILLE...WRIGHTS...ELDRED... 
  HILLVIEW...ROCKBRIDGE...HAYPRESS...WALKERSVILLE...BERDAN... 
  BARROW...BELLTOWN AND WOODY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOVE TO HIGHER GROUND NOW. ACT QUICKLY TO PROTECT YOUR LIFE.

TURN AROUND...DONT DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD 
DEATHS OCCUR IN VEHICLES.  MOTORISTS SHOULD BE CERTAIN TO OBEY ALL 
ROAD CLOSED SIGNS.

&&

LAT...LON 3952 9015 3923 9015 3918 9031 3918 9052
      3926 9060 3939 9062 3941 9062 3952 9058

$$

TRUETT
1 follow-up statement
368 
WGUS73 KLSX 192330
FFSLSX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
630 PM CDT SUN JUL 19 2015

ILC061-083-192334-
/O.EXP.KLSX.FF.W.0065.000000T0000Z-150719T2330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
GREENE IL-JERSEY IL-
630 PM CDT SUN JUL 19 2015

...THE FLASH FLOOD WARNING FOR GREENE AND NORTHERN JERSEY COUNTIES
WILL EXPIRE AT 630 PM CDT...

THE HEAVY RAIN HAS ENDED.  A NEW FLOOD WARNING HAS JUST BEEN ISSUED 
FOR GREENE COUNTY UNTIL 615 AM CDT.  LOCAL LAW ENFORCEMENT REPORTS 
NO FLOODING IN NORTHERN JERSERY COUNTY...SO THE FLASH FLOOD WARNING  
HAS BEEN ALLOWED TO EXPIRE.

LAT...LON 3952 9015 3923 9015 3918 9031 3918 9052
      3926 9060 3939 9062 3941 9062 3952 9058

$$

BRITT

The office that day

Everything else NWS St. Louis, MO issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 19, 1:57 AM CDTFlash Flood WarningLSXGreene, Jersey, Macoupin6 hr
Jul 19, 2:39 AM CDTFlash Flood WarningLSXGreene, Macoupin6 hr
Jul 19, 3:12 AM CDTSevere Thunderstorm WarningLSXAdams48 min
Jul 19, 3:49 AM CDTFlash Flood WarningLSXAdams, Brown, Pike6 hr
Jul 19, 4:35 AM CDTFlash Flood WatchLSXAdams, Brown, Calhoun, Greene, Jersey, Macoupin and 1 more11 hr
Jul 19, 4:53 AM CDTFlash Flood WarningLSXMontgomery6 hr
Jul 19, 7:59 AM CDTFlash Flood WarningLSXGreene, Jersey, Macoupin6 hr
Jul 19, 9:47 AM CDTFlash Flood WarningLSXBrown, Pike6 hr
Jul 19, 10:59 AM CDTAreal Flood AdvisoryLSXMontgomery5 hr
Jul 19, 11:23 AM CDTAreal Flood AdvisoryLSXPike5 hr
Jul 19, 12:03 PM CDTRiver Flood WarningLSXPike25 hr
Jul 19, 4:03 PM CDTFlash Flood WatchLSXAdams, Bond, Brown, Calhoun, Greene, Jersey and 6 more20 hr
Jul 19, 6:23 PM CDTAreal Flood WarningLSXGreene24 hr

Nearby

Flash Flood Warnings in Illinois, 2015Every flash flood warning in 2015

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.